I am trying to sync my Android 4.0 phone to (parts of) my FLAC music library. When syncing the library with autoconversion enabled, all FLAC files fail while all other (MP3) files will be synced correctly.
The Android 4.0 phone is connected as WMDM device. I also tried syncing to an USB stick (as a mass storage device): MP3s get copied to the stick, but FLACs are not converted and ynced due to errors.
The same process works very well with my two iPods!